Mixing-machine for concrete and like substances



I. w. KIDDIE. MIXING MACHINE FOR CONCRETE AND LIKE SUBSTANCES. APPLICATION FILED JUNE I0. I919- I I 1,361,870. tented De0.'14, 1920.

2 SHEETSSHEET I.

F. W. KIDDIE.

MIXING MACHINE FOR CONCRETE AND LIKE SUBSTANCES. APPLICATION man JUNE I0. .1919.

1,361,870, I Patented Dec. 14, 1920;

2 SHEETSSHEET 2.

UNITED STATES PATENT, OFFICE.

FREDERICK WEBSTER KIDDIE, OF LEAMINGTON, ENGLAND, ASSIGNOR TO WING-ET LIMITED, OF LONDON, ENGLAND.

v MIXING-MACHINE FOR CONCRETE AND LIKE SUBSTANCES.

Specification of Letters Patent. Patented Dem 14 I Application filed June 10, 1919. Serial No. 303,073.

To all whom it may concern Be it known that I, FREDERICK WEBSTER Kmmn, subject of Great Britain, residing at 26 Binswood avenue, Leamington, in the county of lVarwick, England, have invented certain new and useful Improvements Relating to Mixing-Machines for Concrete and like Substances, of which the following is a specification.

In the specification accompanying my applioation for a patent of even date herewith certain means are described for stirring the contents of a trough of semi-cylindrical shape forming part of a machine for mixing concrete ingredients or other substances. Such means comprise beaters (sometimes called plows or shovels) each in the form of a shank bearing a two-pronged fork, combined with chains stretched not too tightly between the two prongs.

According to my present invention animproved effect is obtained by employing radial members fixed atsuitable distances apart upon the axial shaft and causing the chains to be swung from one member to the next one and so on through the series. These members may be in the form of radial members at right angles to the shaft and set so that no two consecutive members radiate at the same angle.

Alternatively, these radial members may each take the form of a pair of arms set in one plane upon a common boss which is fixed upon the shaft.

An example of the latter construction is shown in the accompanying drawings in which-- Figure 1 is a perspective view of the trough with its shaft and appurtenances, while Figs. 2, 3, 4:, 5, 6, 7, 8 are side views respectively of the seven pairs of arms taken in order, each pair having a common boss with the shaft in section.

Fig. 9 is an enlarged side view of the central pair of arms.

The driving shaft 5 is of rectangular section and upon it are fixed the seven bosses B B B B B B and B.

These bosses have squared recesses fitting the shaft 5 upon which they are set and four of them are secured by caps C C C C". The center boss 13 is divided and the parts hold the shaft A between them so that no cap is required. The caps and bosses are secured on the shaft by screws D so that the arms are spirally arranged or staggered and said bosses are registered in position and prevented from slipping longitudinally dowels K (Fig. 9). Threaded arms E, E F E F, E F, E F E F, E are screwed into appropriate radial positions on the bosses where they are further secured by nuts H. The arms on the end bosses B B take the form of scrapers G and travel around the flat ends of the trough O. The scrapers G carry tangs C C which take the place of caps for securing the bosses B B to the shaft 5.

The tips of the arms carry chisel-edged shoes J,so adjusted that their edges produce the required clearing effect and in ploughing through the material prevent the trough.

In order to compensate for wear upon the shoes they can be adjusted to any desired length by means of lock nuts H.

Chains L are swung somewhat loosely from any one of the arms on each boss to one on an adjacent boss by means of screw studs or bolts M secured by nuts N necessarily taking an oblique direction from arm to arm. These chains will pass obliquely through the dry, plastic, or semi-liquid material, causing it to be pushed one way or the other according to the direction of the obliquity, mixing it thoroughly and also preventing its adherence to the inside of the trough.

The arms may be set singly on the shaft each with its own boss if preferred.

I do not limit the number of arms, bosses, chains or other details to those mentioned in the description, and various modifications may be introduced without departing from the spirit of the invention.

I claim:

1. In a mixing machine, the combination of a receptacle with a rotatable shaft journaled therein, arms secured on said shaft, flexible material advancing and mixing means carried by said arms and detachable terminal points on the outer ends of said arms.

2. I11 a mixing machine, the combination of a receptacle with a rotatable shaft mounted therein, arms secured on said shaft, flexible advancing and mixing means carried by said arms, and points on the outer ends of said arms. 4

3. In a mixing machine, the combination 5 of a receptacle, with a rotatable shaft mounted therein, staggered arms secured on said shaft, material advancing means in said arms and detachable terminal points having double beveled ends secured on each of 10 said arms as described.

4. In a mixing machine, the combination of a receptacle with a rotatable shaft mounted therein, arms on said shaft and detachable terminal points, having doublebev- 15 eled ends secured on each of said arms.

In witness whereof I have hereunto set my hand in the presenceoftwo Witnesses.

FREDERICK WEBSTER KIDDIE.

Witnesses:

ARTHUR H. STANLY, MARGUERITE L. RowLEY. 

